Crustaceans

Crustaceans are a very diverse group of invertebrate animals that includes the familiar crabs, lobsters, shrimps, prawns, krill, crayfish, woodlice, and barnacles. There are about 67,000 described species. Crustaceans are found mainly in water. Different species are found in freshwater, seawater, and even inland brines, which may have several times the salt concentration of seawater. … Read more